For Oil Filled Distribution Transformer

1 VI-01(R1)LIQUID LEVEL INDICATORSFor Oil Filled Distribution TransformerOIL LEVEL INDICATORM ounting DetailFEATURESM aterials UV Protected PolycarbonatePressure Die Cast CoverFloatConservator Tank DetailCONSERVATOR TANK DIAMETER(A)(*)Float Lever LengthEccentric deviation(C)Installation height(D)(B)1608825751202004088152250601 0719031590130245400130160500310160200(*) Float levers are delivered with 310 mm length as standard. Their length can be freely adjusted by the customer during the installation from min. 88 mm. up to 310 801, Dial Size +20 C+85 CDial No. 80104A-20 C OILLEVEL+120 C+30 CMAXDial No. 80104C+20 CDial No. 80104B- 5 CMIN801-1801-3801-2 MODEL Each completely assembled unit, pressure tested. Nitrophyl float suitable for Transformer oil. Pressure die cast and vacuum impregnated body for zero leakage.

2 Customized dial to individual requirement. Simple design, high reliability, low cost. Optional level marking on polycarbonate dial in front or Aluminium dial at the back. Floats have arm length of 310 mm as standard which can be adjusted during installation from 88mm (min) to 308mm (max).OIL LEVEL INDICATORM odel 802, Dial Size HOLES = mmUner t dcu=2mmDEEP0103022445799 PCD=85120 ML= LENGTH=103 3 = C40 C0 C 3368 MODEL C40 CMAX0 CMAX802-2-20 C+85 C+20 CMINOILLEVELMINMAXOIL LEVELINDICATOR802-3802-4802-6 MINAMRNOLOIL LEVELMAXMINREDOILLEVELGREENMAX802-7802-9 OIL LEVEL802-8 MAXMINOIL LEVEL-10 C+20 COILLEVELMINMAX+90 C+30 CMINMAXS pecificationBody : Pressure die cast Aluminium body powder coated to RAL dial : Aluminium sheet white with black marking / black with yellow glass : UV protected polycarbonate can be printed for level : NBR "O" Ring with shore hardness 70.

3 Float : NitrophylOperating Principle:The radial movement of float is transmitted magnetically to the pointer. There are no electrical contacts in these gauges. The float arm length provided needs to be cut to size before installation to required level indicators are ideal for use on the conservator of oil Filled transformers . They can also be mounted on the side wall of hermetically sealed Transformer FLANGE TYPE LEVEL INDICATORM odel - 805 With Thread & Mounting Bolt OptionDescriptionThe VIAT 805-7 series oil level indicator consists of a square flanged Aluminium die-cast body. The float shaft is magnetically coupled with the pointer on the dial. The dial has yellow markings on a black background, thereby providing excellent is mounted externally by using 4 bolts on the flange surface.

4 The 805 model can also be mounted with threads on the back side. The mounting gasket is supplied. These level indicator is interchangable with leading brands available in the & PrincipleAny movement of fluid in the tank is transferred to the float and shaft. This movement through the magnetic coupling moves the pointer on the indicator is ideal for use with oil Filled transformers and is mounted horizontally on the tank or - With Detachable & Adjustable Float ArmModel - With Integrated Fixed Float DIA (B)INSTALLATION HEIGHTFLOATING LENGTH D ( )MODEL (BACKGROUND BLACK WITH YELLOW/WHITE MARKING)NITRILE BUTADIENE RUBBERALUMINIUM ALLOYALUMINIUM POWDER COATED YELLOWUV PROTECTED POLYCARBONATEALUMINIUM (RAL 7033 PAINT OPTIONAL)POINTER0306050407 MOUNTING GASKETFLOAT SHAFTFLOATDIALPART NO0201 DESCRIPTIONDIAL COVERBODYMATERIAL08 NUTFORGED AL NUTM aterials0406050402010307 VENTCONSERVATOR TANKGROOVE.

5 OD = , ID = ,DEPTH = x 4 HOLES(FOR BOLT MOUNTING)R8 VIATINSTRUMENTSLEVELLIQUIDMINMAX+20 COIL LEVEL AT +20 C+20 ( ) BORE OPENING 593 63 Mounting & InstallationThe twin window on the dome will ensure that one of the two windows is always visible from the required is important to note that the calibration of the gauge is done by the factory and should not be tampered at not remove the locking screw or nut or rotate the dome during LEVEL INDICATOR (Magnetic Type)Mounting Thread - ''/NBRFor Hermetically Sealed TransformerMaterialsModel NoMOLI803 - 1198140268210 MOLI803 - 27771669612454 Float At Max. Oil Level 'D'( 1)Float At Min. Oil Level 'E'( 1)MODEL ( 1)( 1)( 1)FEATURES nnnnnnn Complete isolation of Transformer tank from visual dome. Seamless brass pipe. Free movement of float.

6 High power rare earth magnetic coupling to prevent interference of Transformer magnetic field. Use of Nitrophyl float suitable for Transformer oil. Additional brass protection of transparent dome. Twin windows placed 180 apart to provide view of oil level from all BRASSFORGED BRASSUV REDLOCK RINGBASE PART NAMEOUTER CUP LEVEL INDICATORM ounting Thread - G1 For Hermetically Sealed TransformerFEATURES nnnnn Highly visible red indicator for oil level. Each completely assembled unit, pressure tested. Use of UV protected unbreakable & transparent polycarbonate dome. Additional brass dome protection for polycarbonate cup. Use of Nitrophyl float suitable for Transformer "MINFLOAT AT EXTREME TOPRED INDICATORON TOP POSTIONMAXG1"RED INDICATORON BOTTOM POSTIONFLOAT AT EXTREME BOTTOMMAXMINMAX-MIN MARKING ARE BLACK8416 CONNECTION DIAMETERA DIAMETER1133223404 BCModel - type of oil level indicator is used in hermetically sealed Transformer .

7 The oil level gauge is screwed into the shows the level of the oil in the filling select the correct model number based on your requirement of length 'B' of the float arm. Sufficient margin should be left for the height of gas cushion and that of threaded coupling on the tank No107 OLI 804-277 G1"G1"OLI 804-272 153102148G1"OLI 804-2671439727727226722723210862G1"OLI 804-232G1"OLI 804-24777123G1"OLI 804-22757103247 DIMENSIONSC( 2)MODEL "OLI 804-2002571A( 2)B( 2)195 MATERIAL NITRILE BUTADIENE RUBBERNITRILE BUTADIENE RUBBEREXPANDED PU REDFLOAT02 OUTER RUBBER RING05 PROTECTIVE RINGRETAINER0706 BRASS STAINLESS STEELLENSINNER RUBBER RING0403 TOUGHNED GLASSDESCRIPTIONBODYQTYPART NO011 BRASS EXTRUDED111111 MaterialsDescriptionThe VIAT 806 series oil level indicator consists of a machined brass body with 1''-11 '' NPT thread.

8 The highly visible red floatis held in the oil compartment between the stainless steel retainerand tempered glass. The float provides the indication of oil level in the & ApplicationMost oil used in electrical equipments is colourless and the level is difficult to see without aid. The 806/808 series level indicator provides a red float which indicates the level of oil in the tank. The highly reflective stainless steel retainer provides enhanced visibility of the highly contrasting higher span of levels in a tank, multiple units at different levels may be used. The gauges are recommended for use with fluids having a specific gravity of or VIAT 808 series oil level gauge consists (Optional)of a machined brass/aluminium body with G1'' BSP thread. The highly visible red float is held in the oil compartment between the stainless steel retainer and tempered glass.

9 The float provides the indication of oil level in the NO. 808 Thread Size - G1''MODEL NO. 806 Thread Size - 1'' NPTLIQUID LEVEL INDICATORT hread - G1 FEATURES nnnnnnn Single piece brass / aluminium body construction. Dual rubber sealing provides leak proof assembly. Crystal clear, tempered glass lens. Highly visible expanded PU red solid float. Stainless steel retainer for float. Each level gauge pressure tested after assembly. Ideally suited for Transformer tank DataSWITCH RATING : 5A ; 250V AC OR ; 250V DCMAX. AMBIENT TEMPARATURE : -20 to +85 CMAX. OPERATING PRESSURE : Connection120 DiagramDue to our policy of continuous product improvement, dimensions and designs are subject to change. NOTE : Nitrophyl is a registered trademark of Rogers Corporation, USA.

10 VERTICAL PROTECTION RELAY For Hermetically Sealed Oil Filled transformers Switch protection for falling oil level ApplicationVertical Protection Relay (VPR) monitors the oil level in Hermetically Sealed transformers (further referred as HST) eventually protecting thetransformer. Falling level of oil in the fill pipe of HST operates a switch contact. In a Transformer VPR may replace the G1 pipe float is at its uppermost level when the Transformer is Filled with Transformer oil to the correct level. With the fall in oil level, the float alsocomes down. At a pre-determined height the switch contact closes and operates the alarm. On rising oil level the switch resets at approximately20mm above the alarm installation of VPR should be done on a pipe that is vertical to the top face of a Transformer .